Blotting medium



May 5, 1931. v w. A. HARTLINE 1,803,800

BLQTTING' MEDIUM Filed July 26, 1928 lgffi I v WQ V w I 7A ATTORNEYS.

UNITED TATES PATENT oFFicE WILLIAM A. I-IARTLINE, OF TAMPA, FLORIDA BLOTTING 1VIEDIU1VI Application filed July 26, .1928. Serial No. 295,607.

This invention relates to a blotting mefrom to 100 pounds per square inch, the dium and has for its object the production material being subjected, at such time, to a of a simple and efficient blotting roller which baking temperature of from 600 to 800 deis preferably formed of an argillaceous magrees Centigrade. I terial having a bearing spindle of illium In the production of the blotting medium alloy. shown in Figures 1, 2 and 3, and more par- In the drawings: ticularly in the last mentioned figure, the Fig. 1 is a view partly in elevation and pin 2 is suitably mounted in the mold die partly in section illustrating one form of the so that in the completed article is Will occulo blotting medium embodying the invention, py a position extending coincident with the this form being one adapted for employaxis of the body.

ment as an attachment to fountain pens; In accordance with the invention the F 1g. 2 is a view similar to Figure 1 taken spindle 2 ispreferably of 111mm, which is in a plane at right angles to Figure l; a complex alloy of nickel and chromium,

15 Fig. 3 is a diametric longitudinal secwith lesser amounts of copper, molybdenum,

tional view through th blotting roller tungsten, magnesium, iron, aluminum and shown in Figures 1 and 2, the spindle for silicon. This alloy is highly resistant to corthe roller being shown in elevation. rosion, being substantially unaffected by As shown in the drawings, the'blotting acids and has sufficient hardness to serve 20 di i ill tr t d as in the form of a effectually as aspindle for embedment in the cylindrical body 1, which is provided axially argillaceous material of the roller. Furtherwith a spindle 2 which is embedded therein more the alloy is not altered through oxidaand projects at its ends beyond the ends of tion nor physically by softening, under the the body and is mounted in suitable beartemperatures stated above and under which 25 ings 3, of any desired construction, located temperatures the baking operation is carried 7 upon the end of a fountain pen which is O indicated in the drawings by the numeral 4. It has been found by actual experience In accordance with the principles of the that a blotting medium consisting of a com invention, the blotting medium, may be of pressed, baked body of argillaceous material 3 kaolin or other argillaceous material and such as that contemplated by the present inpreferably of a clay having approximately vention, will be absorptive to a high degree the following composition: and may be employed for an indefinite pe- Cent riod of time in blotting, without appreciable Silica; 71-52 loss of efliciency, the writing fluid being 35 Aluminum oxide (A1 0 27.85 rapidly absorbed by the material and in '85 Calcium oxide (CaO) 0. 63 a more effective manner than in the instance of the ordinary blotting paper. 100, 00 It is to be understood, of course, that vari- V ous changes may be made, Within the scope 40 A clay of the compos1t1on above disclosed of what is claimed, without departing from is to be preferred althopgh various other the spirit of the invention. clays may be employed for the purpose and, Having thus described my invention, what in fact, the invention contemplates the em- I claim is: V ployment of any argil aceous material capa- A blotting roller of argillaceous material 45 ble of being formed to the desired shape of having a bearing spindle of illium alloy 9 the blotting medium and retaining its shape. embedded axially therein. V

Where the blotting medium is to assume In testimony whereof I atfix my signature. the form of a roller, the .rgillaceous mate- I rial, in powdered form, is introduced into WILLIAM A. HARTLINE. su1table dies and subjected to a pressure of 

